Installation & User Manual… · AXYS® IndustryAmp User Manual rev 2.2 2 201605/IAMP2.2 REFERENCE...

Shaping the future of sound reinforcement

Installation & User Manual

AXYS® IndustryAmpModels PB-400, PB-800, PB-400-CN, PB-800-CN(Part Nos. 590401, 590801, 590403, 590803)

AXYS® IndustryAmp User Manual rev 2.2

201605/IAMP_2.22

REFERENCE TO EC STATEMENT OF CONFORMITY

This document confirms that products manufactured by

Duran Audio bearing the CE label meet all the requirements

in the EMC directive 2004/108/EC and LV directive 2006/95/

EC laid down by the Member States Council for adjustment

of legal requirements. Furthermore the products comply

with the rules and regulations from 30 August 1995

referring to the electromagnetic compatibility of devices.

Duran Audio products bearing the CE label comply with

the following harmonised or national standards:

EMC:

EN 55103-1:1996; E1, E2, E3

EN 55103-2:1996; E1, E2, E3

Safety:

IEC 60065:2001 (ed7) +A1:2005 +A2:2010

Mains Harmonics:

EN 61000-3-2:2001

Insulation:

Class1

Duran Audio BV Koxkampseweg 10

5301 KK Zaltbommel

The Netherlands

Tel: +31 418 515583

Fax: +31 418 518077

Zaltbommel, December 2014

USER’S NOTICE AND DISClAIMER

No part of this manual may be reproduced, transmitted,

transcribed, stored in a database system or translated

without the express written permission of Duran Audio BV.

Documentation kept by the end user for back-up purposes

is excluded from the above.

All products and corporate names mentioned in this

manual may be registered trademarks or copyrights

of their respective companies. They are used here for

indicative purposes only.

The information contained in this manual has been carefully

checked for accuracy; however no guarantee is given with

respect to its correctness. Duran Audio BV accepts no

responsibility or liability for any errors or inaccuracies that

may appear in this manual or the products described in it.

Specifications and information contained in this manual

are subject to change at any time without notice.

© 1998-2016 Duran Audio BV. All rights reserved.


201605/IAMP_2.2 3

TABlE OF CONTENTS

REFERENCE TO EC STATEMENT OF CONFORMITY . . . . . . . . . . . . . . . . . . . . . . .2User’s Notice and disclaimer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

TABlE OF CONTENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3IMPORTANT SAFETY INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

Applicable models. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6What’s in the packaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

GENERAl DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7Block diagram and system description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

INSTAllATION AND OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10Mechanical Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Ventilation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10Connector and Wiring details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

AC Mains. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11Audio Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Analogue inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12Amplifier outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12CobraNet® interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13ANS microphone input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Control connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14RS-485 interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14Failure relay. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15Ambient temperature sensor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

DSP section overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17Level controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18EQ adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18Delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18Autogain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Surveillance functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18Auto-input switching. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18Failure relay. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Presets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19CobraNet® configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20DSP bypass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20Load Monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20Amplifier protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Surge protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20Power-on delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

APPENDIx . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21Technical Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21Maintenance and Warranty Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21Common Analogue Grounding Issues . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21Software and Firmware Updates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22Network Cables. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22


201605/IAMP_2.24

This symbol is intended to alert you to the

presence of uninsulated dangerous voltages

within the product’s enclosure that may be of sufficient

magnitude to constitute a risk of electric shock.

This symbol is used throughout this manual and

is intended to alert you to the presence of

important instructions.

1. Read these instructions.

2. Keep these instructions.

3. Heed all warnings.

4. Follow all instructions.

5. Do not use this apparatus near water.

6. Clean only with dry cloth.

7. Do not block any ventilation openings. Install in

accordance with the manufacturer’s instructions.

8. Do not install near any heat sources such as radiators,

heat registers, stoves, or other apparatus (including

amplifiers) that produce heat.

9. Do not defeat the safety purpose of the polarised or

grounding-type plug. A grounding type plug has two

blades and a third grounding prong. The wide blade

or the third prong is provided for your safety. If the

provided plug does not fit into your outlet, consult

an electrician for replacement of the obsolete outlet.

10. Protect the power cord from being walked on or

pinched particularly at plugs, convenience receptacles,

and the point where they exit from the apparatus.

11. Only use attachments/accessories specified by the

manufacturer.

12. Unplug this apparatus during lightning storms or

when unused for long periods of time.

13. Refer servicing to qualified service personnel.

Servicing is required when the apparatus has been

damaged in any way, such as power-supply cord or

plug is damaged, liquid has been spilled or objects

have fallen into the apparatus, the apparatus has

been exposed to rain or moisture, does not operate

normally, or has been dropped.

Warning - To reduce the risk of fire or electric

shock, do not expose this apparatus to rain or

moisture and objects filled with liquids, such as vases,

should not be placed on this apparatus.

Warning - To disconnect this apparatus from the

mains power supply, turn off the power at the

power switch on the rear panel and remove the PowerCon®

connector from the mains input socket labelled Mains on

the rear panel.

Warning - The PowerCon® connector should

never be plugged or unplugged when there is

power on the connector, regardless of whether the

amplifier is switched on or not. ALWAYS ensure that the

mains supply is turned off at source before inserting or

removing the PowerCon®.

Warning - This apparatus is a Class I device and

must be connected to a mains socket outlet that

provides a safety ground connection.

IMPORTANT SAFETY INSTRUCTIONS


201605/IAMP_2.2 5

Thank you for purchasing this AXYS® IndustryAmp.

In order to get the best out of your IndustryAmp, please

take the time to read through this manual before you

install and use it for the first time.

APPlICABlE MODElS

This manual covers the installation and operation of the

following models:

• IndustryAmp Model PB-400 (Part No. 590401): 2

analogue inputs, 4 x 250 W output into 40 ohm load

• IndustryAmp Model PB-800 (Part No. 590801): 2

analogue inputs, 8 x 100 W output into 100 ohm load

• IndustryAmp Model PB-400-CN (Part No. 590403):

2 analogue inputs plus dual-redundant CobraNet®

interface, 4 x 250 W output into 40 ohm load

• IndustryAmp Model PB-800-CN (Part No. 590803):

2 analogue inputs plus dual-redundant CobraNet®

interface, 8 x 100 W output into 100 ohm load

NOTE: There are two further IndustryAmp models, the

PB-400-LI and PB-400-CN-LI, which are intended for

driving low-impedance loudspeaker systems. Please note

that this manual does not apply to these models.

OVERVIEW

The AXYS® IndustryAmp is a multichannel power amplifier

specifically designed for permanent installation in life-

safety and other critical applications. It is designed to drive

loudspeakers in distributed 70 V or 100 V line systems. The

core of the amplifier is a DSP (Digital Signal Processing)

block, which allows comprehensive adjustment of the

audio signals in each channel. The unit also incorporates

a number of fail-safe features, making it very reliable and

suitable for use in life-critical situations.

The IndustryAmp is configured, controlled and monitored

using AXYS® WinControl software, via either RS-485 or

CobraNet® (if fitted).

INTRODUCTION


201605/IAMP_2.26

FEATURES

All models:

• Transformer-coupled outputs for direct drive of 70 V /

100 V line systems

• Full complementary Class AB output stages

• MOSFET output devices with high current safety

margin

• Stable operation under all normal conditions

• Two transformer-balanced analogue inputs (0 dBV)

• On-board DSP, providing control of level, EQ, delay,

etc. on all inputs and outputs

• Full configuration, control and monitoring using

AXYS® WinControl software

• Non-volatile storage of all amplifier parameters

• Control interface via RS-485

• Pilot tone detection

• ANS (Ambient Noise Sensing) mic input

• Ambient temperature sensor input

• Surveillance/failure relay

• DSP bypass function

• Universal power supply (100-240 VAC) with active

Power Factor correction

Additional features for PB-400-CN and PB-800-CN

• Integral dual-redundant CobraNet® audio networking

card

• 8 digital audio inputs

• 8* digital audio outputs

• CobraNet® Serial Bridge allowing Ethernet to be used

for control instead of RS-485

WHAT’S IN THE PACKAGING

In addition to the IndustryAmp itself, each unit is shipped

with the following items:

• Installation and User Manual (this document)

• AC power cable (2 m), fitted with a Neutrik PowerCon®

connector and a European-style mains plug

• Set of mating screw terminal connectors

* Amplifiers with early serial numbers have two digital audio outputs, sufficient to permit “re-broadcasting” of an ANS mic signal. Please contact your AXYS® Audio distributor if there is any doubt which model you have.


201605/IAMP_2.2 7

GENERAl DESCRIPTION

BlOCK DIAGRAM AND SYSTEM DESCRIPTION

DSPProcessing

MicroController

PSU

BypassAmps Relays Transformers

LoadMonitoring

SurgeProtection

Input1

Out 1

Out 2

Out 3

Out 4

Input2

RS-485 Internal Temperature

PB-400-CN and PB-800-CN only

Fan Monitoring

Front LED

Internal Supplies

Mains

AmbientTemperature

Sensor

ExternalFailureRelay

AnaloguePilot

detect

DigitalInputs3-10

CobraNet®

Serial Bridge

1

2

3

4

Out 5

Out 6

Out 7

Out 8

5

6

7

8

To Amps

CobraNet ®

DigitalPilot

detect

x8

CobraNet ®

8 x Digital Outputs

AmbientNoise

Sensing Mic

PB-800 and PB-800-CN only


201605/IAMP_2.28

The simplified block diagram above shows the unit’s

internal signal routing.

The unit has two analogue inputs, making it suitable for

connection to primary and secondary audio sources in life-

safety applications. The inputs are transformer-balanced

and offer low noise and very high CMRR (Common-Mode

Rejection Ratio).

The audio transformers fitted to the analogue inputs are

of professional grade and provide full galvanic isolation

from source and destination equipment, eliminating the

potential for ground loops to occur between items of

equipment which may be running on different AC supplies.

The analogue input and A-D converter stages accept a peak

signal level of +19 dBV without clipping. (At high input

levels, the digital gain within the DSP block will normally

need to be reduced to avoid continuous activation of the

limiter section.)

Both inputs are routed to all amplifier channels - four in

the PB-400(-CN) and eight in the PB-800(-CN) - via the

DSP core.

The amplifier power section employs a fully complementary

Class AB design, using MOSFET devices with a much higher

current rating than is necessary for normal operation. The

power stages feature power-on delay, load monitoring and

surge protection.

Both analogue inputs feed a pilot tone detector so that

continuous monitoring of the input connections may

be made. The detector will, when enabled, switch from

Input 1 to Input 2 if pilot tone is lost. The IndustryAmp

incorporates surveillance functions which activate an

externally-accessible failure relay in the event of a PSU or

other malfunction, or a loss of pilot tone.

If the IndustryAmp is fitted with the optional CobraNet®

card, a further eight, digital audio inputs are available.

These are routed to the DSP core along with the analogue

inputs, and are also continuously monitored for pilot-tone,

with the same auto-switching arrangement as the analogue

inputs. All active inputs (as enabled via WinControl) are

routed to all output channels. The CobraNet® interface

is bi-directional, and the input from an optional Ambient

Noise Sensing microphone can be routed to two of the

eight* outputs. The CobraNet® card also allows the

IndustryAmp to be controlled by WinControl using the

Ethernet connection via CobraNet’s Serial Bridge.

The high-power main supply is conservatively rated and

operates on any AC supply voltage from 100 V to 240 V,

and incorporates active Power Factor correction to

minimise mains harmonics in the audio. Apart from the

main supply, the IndustryAmp is also equipped with a low-

power standby supply. This power supply allows the device

to be powered on and off under network control.

* Amplifiers with early serial numbers have two digital audio outputs (ANS microphone signal only). Please contact your AXYS® Audio distributor if there is any doubt which model you have.


201605/IAMP_2.2 9

FRONT PANEl 1

1. Status LED – bi-colour LED: normal (green), failure (red).

REAR PANEl

R

2

671718

34 5 8 9 10 11 19 20

12 13 14 15 16

2. Failure relay connector

3. ANS mic input

4. RS-485 port

5. Temperature sensor connector

6. Analogue input 1

7. Analogue input 2

8. Output 1

9. Output 2

10. Output 3

11. Output 4

12. Output 5*

13. Output 6*

14. Output 7*

15. Output 8*

16. Mains power connector

17. CobraNet® Port A**

18. CobraNet® Port B**

19. Mains switch†

20. Mains fuse†

Wiring details for all the rear connectors can be found in

subsequent sections of the manual.

* Not present on PB-400 and PB-400-CN

** Not present on PB-400 and PB-800

† Amplifiers with early serial numbers are equipped with a mains switch with integrated over-current protection located on the front panel. Please contact your AXYS® Audio distributor if there is any doubt which model you have.


201605/IAMP_2.210

MECHANICAl INSTAllATION

The IndustryAmp is designed to be mounted in a standard

19” equipment rack. The front panel is fitted with

rackmount ears for this purpose. The IndustryAmp occupies

3U of vertical rack space.

Note that due to the weight of the amplifier (over

20 kg), the use of additional rear supports is

strongly recommended. The rear of the unit has additional

mounting points to facilitate this.

VentilationThe IndustryAmp is forced-air cooled by two internal

temperature-controlled fans. This ventilation method

should ensure that amplifier remains within its operational

temperature range under most circumstances, but if it is

to be installed in a location of high ambient temperature,

and/or in a rack containing a significant quantity of other

heat-generating equipment (see below), consideration

should be given to climate-controlling the room in which

the equipment rack is situated.

Do not install the IndustryAmp in a 19” rack

immediately above or below another item of

equipment generating a significant amount of heat (e.g.,

another power amplifier). Plain 1U blank panels should be

used as spacers. Note that slotted or perforated ventilation

panels should not be used, as these will reduce the effect

of forced-air cooling. Also, be aware of the rear-to-front

direction of airflow of the IndustryAmp; it is not good

practice to install equipment employing forced-air cooling

with different directions of airflow in the same enclosed

rack.

Airflow is via the grilles at the rear (intake) and

front (exhaust) of the amplifier. Ensure that both

sets of grilles are completely clear of any obstructions

within 100 mm (4”) in order to maintain the necessary

airflow.

INSTAllATION AND OPERATION


201605/IAMP_2.2 11

CONNECTOR AND WIRING DETAIlS

AC MainsAC power is via a rear panel Neutrik® PowerCon®

Type 20 mains connector [16]. A mating mains

cable (power cord) fitted with a European-style plug is

supplied with the unit. If the standard AC outlets in the

territory are of a different type, the correct type of mains

plug should be substituted, carefully observing the

following cable colour codes:

CONNECTCOLOUR

(EUROPE)COLOUR (US)

Live Brown Black

Neutral Blue White

Earth (Ground) Green/Yellow Green

The IndustryAmp incorporates a “universal” PSU, and will

operate on all AC mains voltages from 100 V to 240 V.

NOTE: The IndustryAmp has an AC mains fuse.

The fuseholder is on the rear panel [20]. In the

event of the fuse blowing, always first investigate why it

blew. Always replace by a fuse of the same type and rating

as indicated on the rear panel and/or in the amplifier

datasheet.*

NOTE: The PowerCon® connector should NEVER

be plugged in or unplugged while AC mains is

present. This applies whether or not the amplifier is

switched on. ALWAYS isolate the AC mains supply at its

source before plugging or unplugging the connector.

Warning - This apparatus is a Class I device and

must be connected to a mains socket outlet that

provides a safety ground connection.

* Amplifiers with early serial numbers are not equipped with a separate fuse holder. Over-current protection is integrated into the mains switch. Please contact your AXYS® Audio distributor if there is any doubt which model you have.

Warning - Presence of mains voltage is not

indicated by the LED on the front panel. This LED

indicates the status of the IndustryAmp and cannot be

used as a mains voltage indicator.

If the mains switch of the IndustryAmp is not

readily accessible after installation to disconnect

the unit when necessary, the mains connection to the

IndustryAmp should incorporate a manual circuitbreaker

or an accessible mains plug.

1.

3.

2.

2.

1.

Plugging in

Unplugging

fig.1: PowerCon Connector


201605/IAMP_2.212

AUDIO CONNECTIONS

Analogue inputsThe analogue audio inputs use 3-pin 3.81 mm-pitch screw

terminal connectors. Mating connectors are supplied with

the unit. The inputs should be wired according to the

diagram below:

fig.2: Analogue Inputs

To minimise hum and noise pickup, balanced analogue

interconnections between audio sources and the

IndustryAmp should always be used wherever possible. If

driving from an unbalanced source, use the same wiring

as shown above at the amplifier end, but connect the ‘hot’

core to the signal output and the ‘cold’ core to the ground

terminal of that output; the cable’s own screen should be

connected at the amplifier end only.

Amplifier outputsThe amplifier outputs are on 3-pin 7.62 mm-pitch

screw terminal connectors. The secondary winding of

each channel’s 100 V-line output transformer has an

intermediate tapping for use with 70 V-line systems, and

this is available at the same connector. Wire the output

connectors as shown below:

fig.3: Amplifier Outputs


201605/IAMP_2.2 13

CobraNet® interfaceNOTE: These connectors are only present on

Models PB-400-CN and PB-800-CN (Part Nos.

590403 and 590803).

Connections to the optional CobraNet® card are made via

RJ-45 connectors. Either Port A or Port B may be used; if a

dual redundant network is employed in the installation,

then use both ports, connecting each to independent

Ethernet switches.

NOTE: The two CobraNet® ports CANNOT be

used to “daisy-chain” the Ethernet connection

between multiple amplifiers. Every CobraNet port in use,

on each amplifier of a system, should be connected to its

own port on one or more Ethernet switches.

NOTE: The CobraNet® ports do not auto-select

between “straight” and “crossed” cables.

Standard “straight” cables should be used throughout an

installation which include Ethernet switches, but if

connecting the IndustryAmp directly to a PC (i.e., for

configuration purposes), a “crossed” cable should be used.

Standard pre-made CAT5 or CAT5-e network cables (see

note hereafter) may be used to connect amplifiers to the

local Ethernet switch(es). However, in many installations,

the network connection from within a rack to an Ethernet

switch will be via structural cabling. In this case, wire

mating RJ-45 plugs (not supplied) as shown below:

fig.4: CobraNet® Connectors

PIN CAT5 CORE1 White + Orange2 Orange3 White + Green4 Blue5 White + Blue6 Green7 White + Brown8 Brown

The maximum cable run for reliable operation using CAT-5/

CAT-5e cable is of the order of 100 m. If longer distances

are involved, the use of multimode fibre-optic cable is

recommended. This is generally satisfactory up to 2 km,

but repeaters (or the use of single-mode fibre) can be used

to increase the distance further. A third-party Ethernet-to-

fibre interface will be required in these situations.

The CobraNet® interface adds digital audio I/O and an

alternative control method (to RS-485) to the IndustryAmp.

It provides eight additional audio inputs and eight* audio

outputs, at a sampling rate of 48 kHz and bit depths of 16,

20 or 24 bits. Another CobraNet®-equipped product will be

required elsewhere in the system to transmit and receive

the data. See page 20 for further details.

NOTE: Unscreened CAT-5/CAT-5e UTP cable can

be used, but note that the amplifier may fail to

preserve its high level of surge immunity and as a

consequence, will no longer be compliant with the

standards set out in the EC Statement of Conformity. CAT-

5/CAT-5e twisted pair cable with an overall foil shield

(referred to as FTP or F/UTP) is required for compliancy.

ANS microphone inputThe IndustryAmp’s DSP card includes an Autogain

algorithm which adjusts the gain of the amplifier in

response to ambient noise levels. To accomplish this, an

external Ambient Noise Sensing (ANS) microphone**

must be connected to the ANS mic input.

Connection is via a 3-pin 3.81 mm-pitch screw terminal

connector, with the same pinout as the analogue audio

inputs. See “fig.2: Analogue Inputs” on page 12 for

wiring details.

Note that on Models PB-400-CN and PB-800-CN the

post-preamp ANS mic signal may be re-broadcast on two

channels of the CobraNet® interface. This permits an ANS

mic to be monitored at a remote location.

* Amplifiers with early serial numbers have two digital audio outputs (ANS microphone signal only). Please contact your AXYS Audio distributor if there is any doubt which model you have.

** A suitable AXYS® microphone (combined with a temperature sensor) is available as an option – Part No. 97661101 Ambient Mic and Temperature sensor. Refer to “Ambient temperature sensor” on page 16 for wiring details.


201605/IAMP_2.214

CONTROl CONNECTIONS

RS-485 interfaceThe RS-485 network connection should be wired for

Models PB-400 and PB-800 if remote monitoring and

control are required. Its connection is optional for Models

PB-400-CN and PB-800-CN, as the CobraNet® Serial

Bridge feature makes it possible to control and monitor

the IndustryAmp via EtherNet instead. However, some

CobraNet-based installations may still utilise the RS-485

interface as a secondary backup, or as the control protocol

of choice. AXYS® WinControl software can operate using

either protocol, but control via the CobraNet® Serial

Bridge requires either Cirrus CobraNet Object Tools (COT)

or CobraNet Application Development Tools to be installed

on the computer running WinControl.

The network connection is 5-pin 3.81 mm-pitch screw

terminal connector, and should be wired as shown in the

diagram below:

fig.5: RS-485 Connections

Note that 2-pair, individually-screened cable should be

used for RS-485 connection. The transmit (Tx) and receive

(Rx) balanced data lines must be wired via their own

twisted pairs. CAT-5 type UTP or FTP cable is NOT suitable.

Please refer to the Appendix section of the manual for

cable specifications.

The RS-485 interface permits multiple amplifiers to be

“daisy-chained” in parallel (see diagram below), so that

all units are controlled by the same PC. In such a system,

each amplifier must have its own unique network address;

this is set up via WinControl.

to other devices

unit 3 unit 2 unit 1

host

ABYZ

DGND

ABYZ

DGND

ABYZ

DGND

YZABDGND

fig.6: RS-485 Network

The maximum cable length over which the network

connection will operate reliably depends on the cable type

and the baud rate used. With good quality cable, a safe

maximum figure is 2000 m. If the distance is significantly

longer than this, a network repeater will be required.

Before connecting multiple devices to the same

network subnet, ensure that their network

addresses do not overlap. Each device should be set to a

unique network address (determined via WinControl).

In some installations, it is normal practice to

disconnect the RS-485 network from the USB-to-

RS-485 converter at the host (computer) during normal

operation. This removes the possibility of extraneous data

being inadvertently transmitted over the network. In such

a situation, the converter is only reconnected when system

maintenance or checks are required. Disconnecting from

the convertor in this way leaves the Rx lines of the devices

unterminated. In most situations this does not present any

problems, but with a large network in a hostile EMC

environment, it is recommended that the host Y and Z lines

(host Tx/device Rx) are terminated in a 100 ohm resistor

for normal operation. This can be easily achieved by

plugging the XLR5 F connector into a spare male connector

with the resistor on the appropriate pins. This termination

can then be removed and the convertor reconnected when


201605/IAMP_2.2 15

necessary. (If there is any doubt about which pins should

be terminated, shorting all five pins will generally be

equally effective.)

Failure relayThe IndustryAmp includes a single-pole changeover relay

whose contacts are accessible on a 3-pole 3.81 mm-pitch

screw terminal connector. The conditions under which

the relay operates are defined as part of the amplifier

configuration in WinControl.

The relay connections may be configured either as volt-

free, or with additional internal resistors to allow them

to be connected directly to impedance-sensing line

monitoring equipment such as the AXYS® Cerberus*. This

selection is made by moving an internal PCB jumper. See

“fig.7: Failure relay”.

In volt-free operation, CO is connected to NC; a failure

condition causes CO to be connected to NO.

When configured for impedance-sensing use, the

impedance between CO and NC is 10k Ω and open-circuit

between CO and NO in normal operation. When a fault

condition occurs, the impedance between CO and NC rises

to 20k Ω, and CO is short-circuited to NO.

An AXYS® Cerberus or other impedance-sensing fault

monitoring equipment may be connected to CO and NC.

The contact wiring arrangement is shown in “fig.7: Failure relay”.

The relay contacts have maximum current and voltage

ratings of 100 mA and 24 V respectively.

fig.7: Failure relay

Configuration Jumper Notes

Volt-free Towards rear Factory default

Impedance-sensing Towards front -

*Amplifiers with early serial numbers do not have the option of re-configuring the volt-free relay contacts for impedance-sensing operation. Please contact your AXYS® Audio distributor if there is any doubt which model you have.


201605/IAMP_2.216

Ambient temperature sensorThe IndustryAmp is equipped with a frost protection

system which can internally generate a low-level tone if

the ambient temperature drops below a pre-determined

threshold. This produces current in the loudspeaker voice

coils, warming the drivers slightly.

If this function is required, an external ambient temperature

sensor (available as an option – see below) should be wired

to the 2-pin 3.81 mm-pitch screw terminal NTC (Negative

Temperature Coefficient) connector using screened two-

core cable. Connect the ‘+’ terminal of the sensor to the

‘+’ pin of the NTC connector, and both the ‘-‘ terminal of

the sensor and the screen of the cable to the pin of the

NTC connector marked with an earth (ground) symbol .

A suitable AXYS® temperature sensor (combined with

an ANS microphone) is available as an option (Part No.

97661101 Ambient Mic and Temperature sensor). This

should be wired using twin twisted-pair cable with an

overall screen. Use one pair for the microphone and the

other for the temperature sensor. Connect ‘ntc’ on the

sensor to ‘+’ on the NTC connector and ‘AGND’ on the

sensor to the NTC connector pin marked with an earth

(ground) symbol . Connect the microphone pair to the

‘+’ and ‘-‘ pins of the Ambient Microphone input. The

cable’s overall screen should be connected to the pin

of the Ambient Microphone input marked with an earth

(ground) symbol .


201605/IAMP_2.2 17

DSP SECTION OVERVIEW

The IndustryAmp incorporates a 32-bit floating point Digital Signal Processor (DSP) in conjunction with 24-bit 128x-oversampling

A-D and D-A conversion. This permits a very extensive range of system parameters to be controlled remotely and for internal

storage of unit configuration.

1238

VOLU

ME

DELAY

AUTO

GA

IN

OPTIO

NA

LEXTERN

AL

MICRO

PHO

NE

EQ

8 bandparam

etric

DELAY

GA

IN

&

POLA

RITY

4567

To Amplifiers

To CobraNet®

Outputs

INPU

T 1

INPU

T 2

INPU

T 3

INPU

T 4

INPU

T 5

INPU

T 6

INPU

T 7

INPU

T 8

INPU

T 9

INPU

T 10

ANALOGUEDIGITAL - via CobraNet®

Priority Switching

4 bandparam

etricG

AIN

DELAY

EQ

4 bandparam

etricEQ

Cobra xmt 1

Cobra xmt 2

Cobra xmt 3

Cobra xmt 4

Cobra xmt 5

Cobra xmt 6

Cobra xmt 7

Cobra xmt 8

Cobra xmt 6

Cobra xmt 5

Cobra xmt 2

Cobra xmt 1

Cobra xmt 3

Cobra xmt 4

Cobra xmt 7

Cobra xmt 8

PB-400-CN and PB-800-CN only

PB-800 and PB-800-CN only

fig.8: DSP block diagram


201605/IAMP_2.218

All DSP functions are adjusted using the WinControl

software application. Detailed information on the use of

WinControl is beyond the scope of this manual, and users

should consult the WinControl Help files.

level controlsThe gain of each analogue input and each digital input

(Models PB-400-CN and PB-800-CN only) may be adjusted

independently over the range -70 dB to +10 dB. Nominal

input level with 0 dB gain is 0 dBV, and the maximum input

level is +19 dBV (peak).

The output level of each amplifier channel can also be set

independently, with a range of 80 dB.

Note that after the inputs have been summed, there is

also a master level control (“Volume”), which provides a

single-point adjustment of the output levels of all amplifier

channels.

Polarity (phase) inversion is also available for each input

and output.

EQ adjustmentThe DSP section provides very comprehensive signal

equalisation for both inputs and outputs. Each analogue input,

each digital input (Models PB-400-CN and PB-800-CN only),

and each amplifier channel has its own 4-band parametric

equaliser. These provide up to 25 dB of cut or boost per band

(depending on filter type selected) over the range 10 Hz to 24

kHz, with per-band selection of filter type.

Output equalisation can be used to construct crossover

filtering to allow the IndustryAmps to be used with multi-

way loudspeaker systems. Input equalisation permits

tailoring of individual input signals for optimum clarity.

In addition to individual input and output equalisation,

there is an overall 8-band parametric equaliser in the main

volume control stage, which affects all inputs and outputs.

Each band has the same characteristic as those of the

input and output equalisers.

DelayDelay may be inserted in any or all of three locations in the

audio signal chain.

Each output channel may have up to 43.6 s of delay*.

Additionally an overall unit delay of up to 21.8 s may be

inserted at the main volume control stage. Furthermore

each analogue input may have up to 10.7 s of delay (PB-

400 and PB-800), for the models equipped with CobraNet®

(PB-400-CN and PB-800-CN) this maximum input delay is

restricted to 1.3 s.

Please refer to individual product datasheets for full data

on the IndustryAmp’s delay capabilities.

AutogainThe DSP section includes an autogain algorithm which can be

set to automatically adjust the overall volume level according

to the ambient noise level detected by a microphone

connected at the ANS mic input. The algorithm measures the

ambient noise in gaps in the programme material being fed

via the IndustryAmp. Once enabled, the amount of additional

gain per dB of ambient noise increase can be controlled, as

well as the threshold at which gain adaption begins.

SURVEIllANCE FUNCTIONS

The IndustryAmp incorporates various surveillance features

to ensure continuous operation in critical applications.

Auto-input switchingNormal configuration of the IndustryAmp is for both

inputs on Models PB-400 and PB-800, and all ten inputs

on Models PB-400-CN and PB-800-CN to be permanently

summed, so that signals on all enabled inputs are always

fed through the system. However, if wished, priorities may

be assigned to individual inputs so that audio through the

system is normally derived from one input only. The inputs

are then monitored, either for presence of pilot tone, or

for a continuous signal level above a pre-determined

threshold. In the event of non-detection of the pilot tone

or input signal, the signal source can be switched to that

on an alternative input.

This arrangement is primarily intended to provide

redundancy; by utilising more than one audio distribution

path, a high degree of system of security can be gained.

* Amplifiers with early serial numbers are equipped with less internal memory, this halves the maximum available delay times. Please contact your AXYS® Audio distributor if there is any doubt which model you have.


201605/IAMP_2.2 19

The Input Mode setting in WinControl (at Input >

Common parameters) allow selection of auto-

switching mode. A brief description of each mode follows;

see the WinControl Help files for full details.

Normal

Auto-switching is disabled. All inputs are active, and

summed. Use this mode if only one input is in use.

level-controlled priority switching

When enabled, the inputs will switch when the signal level

at the detection point drops below -60 dBFS (default value),

but this threshold may be set to any level between -80

dBFS and -20 dBFS. The detection point is post-processing,

in order that filtering may be applied to remove specific

frequencies or bands. When using analogue inputs, the

relationship between dBFS and dBV’s measured at the

amplifier’s inputs should be taken into consideration;

WinControl’s Help files give full details.

It is also possible to set a Hold Time, so that unwanted

switching does not occur between natural gaps in the

programme.

Pilot tone-controlled priority switching

It is common practice in critical audio systems to

permanently route a low level, high-frequency tone

through the system. The presence of this pilot tone can

then be detected by various items of equipment to verify

the continued operation of the audio paths. Set Input

Mode to Pilot tone-controlled priority switching to enable

this mode.

The IndustryAmp’s pilot tone detector on the analogue

inputs operates in the frequency range of approximately 20

kHz to 28 kHz. The detector is most sensitive in the center

of this frequency range, the detection threshold is not

software configurable. On the digital (CobraNet®) inputs

on Models PB-400-CN and PB-800-CN, the frequency

range is 19.2 kHz to 23.5 kHz and the threshold may be

set between -10 dBFS and -60 dBFS.

The amplifier’s action on non-detection of a pilot tone can

be configured via WinControl. A fault condition can be

“flagged”, and/or the input can be set auto-switch to that

with the next priority.

A notch filter should be inserted to suppress the

pilot tone if its frequency is less than half the

internal processor’s sample frequency (Fs/2, approximately

24 kHz). If the pilot tone is not sufficiently suppressed,

signal detection (and other functions such as frost

protection and Autogain) will not function properly.

Further, this may result in excessive dissipation in the

power amplifiers and/or connected loudspeakers, or

interference with the internally-generated tone used for load

monitoring. Pilot tone frequencies above Fs/2 are sufficiently

suppressed by the anti-aliasing filter of the ADC. On CobraNet®

equipped models, any pilot tone frequency received via the digital

inputs must always be < Fs/2.

Failure relayThe single-pole changeover failure relay may be wired to a

‘common fault’ or other external fault monitoring system

so that any fault condition detected by the IndustryAmp

is immediately reported. The conditions which cause

activation of the failure relay may be defined in WinControl,

and may include any or all of: DSP/amplifier/CobraNet®

board faults, load monitoring, internal temperature

sensing, fan operation, pilot tone detection, etc. See the

WinControl Help files for full details.

If it is required to interface the IndustryAmp to impedance-

sensing fault-monitoring equipment such as the AXYS®

Cerberus, the failure relay contacts may be re-configured

by moving an internal jumper. See “fig.7: Failure relay” on

page 15 for connection details.

PRESETS

In addition to retaining all current parameters and settings

in non-volatile memory so that the amplifier resumes

the same operational status after a power failure, the

IndustryAmp also has seven further internal memories

(Presets), each of which may contain an alternative unit

configuration. These Presets are normally accessed via

WinControl, but any third-party control system capable

of transmitting the correct commands via RS-485 (e.g.

Crestron, AMX, etc.) may also be used.

One of the Presets may be assigned as an Emergency


201605/IAMP_2.220

Preset, and automatically loaded in the event of loss

of network communication. In the case of CobraNet®

equipped models in life-safety systems, it is generally

advisable to provide an analogue backup audio feed and

configure the amplifier to switch to a Preset including this

in the event of a network failure. See the WinControl Help

files for full details.

COBRANET® CONFIGURATION

The CobraNet® card fitted to Models PB-400-CN and PB-

800-CN is self-organising and requires no adjustments.

However for configuring systems with multiples of PB-

400-CN/PB-800-CN units, each amplifier must have been

assigned a unique IP address. This, as well as the audio

routing, is defined using Cirrus Logic’s CobraNet Discovery

software application. For systems that incorporate one or

more AXYS® WinControl Server PCs for system management,

this application will be pre-installed on each computer.

This topic is beyond the scope of this manual, and further

information can be found in the documentation related to

the WinControl Server configuration.

DSP BYPASS

The IndustryAmp’s DSP system is continually monitored for

correct operation, and in the event of failure, both analogue

inputs are connected directly to the inputs of all amplifier

power stages. This failsafe bypass ensures that the primary

audio inputs always feed the loudspeaker system, even in

the event of a major failure. The conditions for bypass are

configurable from WinControl Service version. By default,

a ‘DSP not running’ condition triggers the bypass action.

As with all other internally-monitored amplifier functions,

a DSP failure is reported to the WinControl server via RS-

485 or the CobraNet® Serial Bridge, as well as triggering

the external failure relay (if configured to do so).

lOAD MONITORING

The amplifier channels are equipped with current-

sensing load monitoring. This operates in the ultrasonic

range, at 22 kHz.

For correct operation, the system must be calibrated

with the normal loads connected to each amplifier

channel to establish a reference load current. After

calibration, any partial or total failure of any of the

loads (or cabling) will be registered as a deviation of

load current from the reference level. Load monitoring

enabling and calibration is carried out using WinControl

(Parameters > Initialization registers

> Miscellaneous-1). Failure of a load monitoring

test may be set to trigger the failure relay, if wished. See

the WinControl Help Files for further information.

AMPlIFIER PROTECTION

Surge protectionEach channel of the power amplifier stage is equipped

with gas discharge surge protection devices connected

between each output terminal (100 V, 70 V and 0 V) and

ground These are designed to withstand high-energy

voltage spikes of up to 4 kV to protect the amplifier output

devices from damage. The amplifier output stages also

incorporate clamping diodes to provide protection from

lower amplitude voltage spikes.

Power-on delayWhen the IndustryAmp is powered-up, the amplifier output

terminals are disconnected from the amplifier power

stages themselves by internal relays for a short period, to

allow the internal voltage rails to stabilise and prevent any

unwanted surges from damaging the loudspeakers.

You will hear a click a few seconds after turning the

amplifier on and the front panel Status LED will go from

red to green; this is normal operation.


201605/IAMP_2.2 21

APPENDIx

TECHNICAl SPECIFICATIONS

Full technical specifications on all models are available at:

http://www.duran-audio.com;

MAINTENANCE AND WARRANTY INFORMATION

Maintenance

Maintenance should only be performed by qualified service

personnel. In case of doubt always contact your dealer. For

cleaning, use non-abrasive and non-aggressive household

cleaning agents only.

Warranty Information

This IndustryAmp is covered by Duran Audio’s standard

product warranty, and is subject to the terms and

conditions of the warranty.

Please consult http://www.duran-audio.com for a full

statement of warranty policy.

COMMON ANAlOGUE GROUNDING ISSUES

Correctly connecting the IndustryAmp to ground has

several benefits. A full discussion of the issues involved can

be found at http://www.duran-audio.com;

Basic points to observe are:

1 . Safety . The GND terminal of the PowerCon® mains

connector provides a direct low impedance path from the

metal parts of the chassis to ground. Always connect this

terminal.

2 . Reduction of RF emission . Although the IndustryAmp

electronics are well shielded and external connections are

decoupled to prevent RF emission from the internal high

speed digital circuits, this protection will not work properly

if the chassis is not connected to ground.

3 . RF Immunity . RF currents induced in the signal cables by

external RF fields are effectively shorted to chassis ground,

provided that the cable screen (shield) is of sufficiently low

impedance.

In addition to the mains ground, IndustryAmp connectors

have ground pins marked in different ways. Each serves a

dedicated purpose and care should be taken that they are

not interchanged or connected to each other.

• The pins with a symbol on the audio line input

connectors and the ambient SPL mic/temperature sensor

connector are connected internally directly to the chassis

of the amplifier. These pins are for connecting the screen

(shield) of the audio and sensor cables.

• The RS-485 connector has one pin marked DG and

is intended as a terminal for the network cable screen

(shield). Since the RS-485 interface is optically isolated (to

prevent ground loops), DG has no relation to the chassis

ground. DG should not be connected to any other ground

pin on the chassis.


201605/IAMP_2.222

SOFTWARE AND FIRMWARE UPDATES

The AXYS® WinControl application is freely available and

can be downloaded from the download area of our website;

http://www.duran-audio.com. We advise installers, users

and engineers to check our site regularly for updates.

Intellivox firmware and DSP software upgrades will

also be made available through the website. For further

information about how to use WinControl please refer to

the WinControl Help files.

NETWORK CABlES

The type of cable necessary for correct operation of the RS-

485 network is twin twisted pair with each pair individually

shielded. Numerous cables of this type are readily available

and cables broadly meeting the specifications of the

example cable given below are likely to be suitable.

Example of a preferred cable type:

Type BELDEN ‘Datalene’ series No. 9729 2-pair

Characteristic impedance 100 ohms

Capacitance (core to core) 41 pF/m

Capacitance (core to screen) 72.5 pF/m

DC resistance (core) 78.7 ohms/km

DC resistance (screen) 59.1 ohms/km

DURAN AUDIO BVKoxkampseweg 10, 5301 KK Zaltbommel, The Netherlands.

tel. +31 418 515583 fax. +31 418 518077http://www.duran-audio.com [email protected]

Installation & User Manual… · AXYS® IndustryAmp User Manual rev 2.2 2 201605/IAMP2.2 REFERENCE...

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Transcript of Installation & User Manual… · AXYS® IndustryAmp User Manual rev 2.2 2 201605/IAMP2.2 REFERENCE...